Machine for molding journal-bearings.



No. 695,740. Patented Mar. I8, I902.

. F. J. LASS. IIIAGI-IINE FOR MOLDING JOURNAL BEARINGS. (Application and m 31, 1901. (No Model.) 3 Sheets-- Sheet I.

mm 11 1 in. a In I 1 v I IIIIIIIIIII IIIIIIIIIIIIIHIIIIIIIIIIIIIIIIIIIIIIII IIIIIIIIIIIIIIIIIIIII.

A IIIHm. I

Illllllllllllllll MmlllllliHIIIIHIIIHIIHIIHIHIHIIHIIHHHHIHHI III ' 6 5601' fizvezziv r/ v flederc'cJZag-gv;

No. 695,740. Patented Mar. l8, I902.

, F. J. LASS.

MACHINE FUR MOLDING JOURNAL BEARINGS.

(Application filed May 81, 1901.) (No Model.)

3 Shoots-Sheet 2.

R m b 11$ k Lu 5 a *3 flak/722 0 rediiz CJjami 'ruz Nana's PETERS O0, PNOTD-LITNQ. wnsumcn'uu. 0v 0.

m. 695,740. Patented M ar. l8, I902.

F. J. LASS.

MACHINE FOR MOLDING JOURNAL BEARINGS.

(Application filed 3 Sheets-Sheet 3'.

(No Model.)

fizz/622%)? jr ealelic JiTQJJj TM! mama mam co. noamuma. mam

llnrrnn Srarns n'rnnr FFICE.

FREDERIO J. LASS, OF AURORA, ILLINOIS.

SPECIFICATION forming part of Letters Patent No. 695,740, dated March 18, 1902. Application filed May 31, 1901. Serial No. 62,564. (No model.)

To (0Z5 whom it may concern:

Be it known that I, Fannnrnc J. Less, a citizen of the United States, residing at Aurora, in the county of Kane and State of Illinois, have invented certain new and useful Improvements in Machines for Molding Journal-Bearings, of which the following is a specification.

The invention relates particularly to a machine and pattern for molding journal-bearings as used in connectionwith car-axles, and particularly to the means by which a movable part of the machine is made to form a part of the pattern, all of which will more fully hereinafter appear.

The principal object of the invention is to provide a simple, economical, and efficient machine for molding journal-bearings for caraxles; and the invention consists in the features, combinations, and details of construction hereinafter described and claimed.

In the accompanying drawings, Figure 1 represents a plan view of the combined machine and pattern looking at it from the top and showing the flask in position for the placing of molding-sand therein; Fig. 2, a vertical sectional elevation, taken on line 2 of Fig. 1, looking in the direction of the arrows; Fig. 3, a cross-sectional elevation, taken on line 3 of Fig. 1, looking in the direction of the arrow; Fig. 4, a sectional elevation taken through a portion of the pattern or machine on line 4. of Fig. 1; and Fig. 5, a sectional. elevation showing a portion of the pattern and the machine, taken on line 5 of Fig. 1.

In the art to which this invention relates it is well known that journal-bearings for car axles must be made so as to resist the tremendous strains and stresses incident to the operation of the cars with and without heavy loads and the frictional force developed thereby. As a consequence the main body of the bearing should be made of a malleable metal of great tenacity and strength, preferably of brass or a so-called bronze composition; but in order to minimize the friction resistance the face thereof should be formed of to all intents and purposes, so far as theiroperative use is concerned, one integral structure. In the older art it was found necessary and, in fact, essential to provide the inner concave surface of the body portion with a coating of tin, zinc, or similar metal to form a binder, so that a union could be made between the main body portion and the molten babbitt when it was cast in the bearing. This, however, was found to have objections in that when the babbitt portion broke or became ruptured in any way it was liable to fall out. Again, the union between the malleable composition and the babbitt metal was far from being perfect. In order to overcome these objections, the malleable base has been formed in such a manner that its concave portion is provided with pockets or depressions having tongues therein which form interlocking projections to hold the babbitt in a firm mechanical union with the brass composition.

To form a base of the above-described form by the ordinary methods of molding it would be necessary to form the pockets and tongues by cores made in a separate mold and set in place after the pattern has been drawn. This method entails several additional operations, and consequently additional time and expense, and fails to assure as uniform a prod not. These operations are objectionable in that they are expensive and take considerable time, it being well known that every time one of these articles is handled or operated on considerable expense is necessarily involved. The principal object of this invention, therefore, is to provide a journalbearing pattern and molding-machine therefor in which the tongues or projections are formed in the pattern and made a movable part of the machine, so as to permit of their being moved into the body of the pattern at the proper time to permit the Withdrawal of the pattern from the sand and to be moved outwardly to form the desired tongues and complete the pattern,dispensing with all subsequent operations incidental to coring, all of which will more fully hereinafter appear.

In constructing a machine and pattern for molding journalbearings I provide a base portion a of the desired shape, size, and strength to hold and maintain the operative and the pattern portion the lower or concave surface of the journal-bearing, this latter portion containing the guiding lugs 6,

which are also above the stripping-plate, as shown particularly in Fig. 2.

Examining Fig. lit will be seen from an inspection of the concaved pattern portion that the concave part of the journal-bearing pattern is provided with a number of pockets or depressions f,each of which contains an outwardly-projecting tongue g, which, as shown in Figs. 1 and 2,is at an angle to the vertical and horizontal planes, and that such projecting tongues are approximately tangent to the concaved surface. These projecting tongues, as hereinbefore suggested, are provided for the purpose of forming projections in the casting that will interlock with the Babbitt metal and form a mechanical union therewith to prevent the disengagement of the parts. From an inspection of Figs. 1 and 2 it will be seen that the withdrawal of the pattern from the sand could not be done perfectly for the reason that the tongues are at an angle to the line of disengagement and as a consequence would destroy the mold during the act of withdrawal. In order to overcome this and provide for the easy withdrawal of thepattern ,these projecting tongues are arranged at the desired angle and, as shown in Fig. 2, made as integral portions of the oscillating levers h and 91, mounted upon pivots j. It becomes, therefore, necessary to provide means for rocking these levers to move the tongues inwardly and out of the way. For this purpose one of the levers, preferably h, is provided with a downwardly-depending operating lever-arm 7c and with a segmental gear Z, engaging a similar segmental gear m on the lever 11, so that the motion of one lever is imparted to the other. A lockinglever n is provided and pivotallymounted in a pair of downwardly-projecting arms 19, secured to the pattern, as shown in Fig. 3. This locking-lever is bifurcated at the top and bottom-at the top portion, as shown in Figs. 2 and 3-to straddle the segmental gears and engage with a projecting locking-lug g on the first-named segmental gear Z, and thus lock the lever on which such segmental gear is mounted against movement when the parts are in the position shown in Fig. 2. The operating lever-arm is provided with a pair of fiat springs r, impinging against the lower bifurcated end of the locking-lever to keep it, when all extraneous force is removed, in locking position.

To operate the parts at the desired time, an operating-rod s is provided and recessed or bifurcated, as shown in Fig. 3, so as to span the lower end of the operating lever-arm.

This operating-rod is provided with an elongated slot t, as shown in Fig. 2, in which a pin to on the operating lever-arm is inserted; and such rod is further provided with upwardly-projecting lugs 11, arranged to engage the lower free end of the locking-lever, so that as the operating-rod is removed to the right this lug first engages the free ends of the locking-lever and oscillates it against the tension of the spring r out of engagement with the locking-lug on the segmental gear, so that when the end of the slot 6 reaches the pin a it may oscillate through such pin the operating lever-arm and by means of the segmental gears above described the levers h and 2', with their respective tongues g, inwardly toward the longitudinal center of the pattern and out of the way to permit such pattern to be withdrawn from the mold.

The stripping-plate is constructed and arranged, as shown in the drawings, to receive two half-flasks w and 00, so that the impressions of each half of the pattern are taken at the same time, and when they, with the impressed sand, are moved from engagement with the pattern such flasks may be engaged with each other to form a complete mold, all of which will be understood by those skilled in the art.

I claim-- 1. In a machine of the class described, the combination of a main portion forming the body of a carj ournal-bearin g pattern and provided with pockets or depressions in its concave portion, pivoted lever mechanism forming a plurality of tongue portions entering the depressions in the concave portions, locking-lever mechanism for locking the pivoted levers in operative holding position, and means for releasing the locking-lever mechanism and operating the pivoted levers to move the tongues out of and into position, substantially as described.

2. In a machine of the class described, the combination of a main portion forming the body of a car-journal-bearing pattern and provided with a plurality of depressions in its concave surface, two pivoted interlocking levers provided with a plurality of tongues arranged at an angle to the horizontal and vertical planes entering such depressions to complete the pattern, locking-lever for locking the pivoted levers in operative holding position, and means for releasing the locking-lever and operating the pivoted lovers to move the tongues out of and into position, substantially as described.

3. Ina machine of the class described, the combination of a main portion forming the body of a journal-bearing pattern provided with a concave surface having a plurality of depressions or pockets therein, two intermeshing levers provided with a plurality of tongues entering such depressions at an angle to the vertical and horizontal planes, a locking-lever for locking the intermeshing levers in operative position, and means for operat one of such levers, spring mechanism 011 the operatinglever-arm, a locking-lever engaging with the locking-lug and with the spring on the operating lever-arm, and an operatingrod for releasing the locking-lever and operating' the intermeshing levers, substantially as described.

FREDERIO J. LASS.

lVitnesses:

THOMAS F. SHERIDAN, HARRY IRWIN OROMER. 

